What is 10 percent of 30?
10% of 30 is 3.
10% of 30
3
How it is calculated
Formula: X% of Y = X ÷ 100 × Y
- Turn the percentage into a decimal: 10 ÷ 100 = 0.1.
- Multiply by the number: 0.1 × 30 = 3.
What this means
- Shortcut: 10% is 1/10, so divide 30 by 10: 30 ÷ 10 = 3.
- As a price: a 10% discount on $30 saves $3, so you pay $27; adding 10% instead (tax or a tip) makes it $33.
Try other numbers
The full percentage calculator, filled in with these values.
%
Formula: X% of Y = X ÷ 100 × Y
10% of 30 is
3
10 ÷ 100 × 30 = 3
| Percentage | Value |
|---|---|
| 1% | 0.3 |
| 5% | 1.5 |
| 10% | 3 |
| 15% | 4.5 |
| 20% | 6 |
| 25% | 7.5 |
| 50% | 15 |
| 75% | 22.5 |
Show the steps
- Turn the percentage into a decimal: 10 ÷ 100 = 0.1.
- Multiply by the number: 0.1 × 30 = 3.